| 摘要 |
The invention relates to a repeater unit (10) for a fuel cell stack (8), comprising a membrane electrode assembly (20) and a flow field (30), designe d to supply an active surface (22) of the membrane electrode assembly (20) w ith gas (32) and which has at least one gas through opening (34). According to the invention, a gas-tight flow barrier (36) is arranged between the acti ve surface (22) and the gas through opening (34), such that gas (32), flowin g through the first gas through opening (34) flows around the gas flow barri er (36), wherein the projection of the gas flow barrier (36) on the edge of the active surface (22) is at least half as long as the projection of the ga s through opening (34) on the edge of the active surface (22). |
